zeppelin git commit: [HOTFIX]. Minor doc fix for back-end-angular.md

Repository: zeppelin Updated Branches: refs/heads/branch-0.7 b9d8323b7 -> 4803f8ffb [HOTFIX]. Minor doc fix for back-end-angular.md ### What is this PR for? The example in the doc would fail due to typo, straightforward fix. ### What type of PR is it? [Hot Fix] ### Todos * [ ] - Task ###

zeppelin git commit: [HOTFIX]. Minor doc fix for back-end-angular.md

Repository: zeppelin Updated Branches: refs/heads/master 6c4ccf331 -> 2a06292c1 [HOTFIX]. Minor doc fix for back-end-angular.md ### What is this PR for? The example in the doc would fail due to typo, straightforward fix. ### What type of PR is it? [Hot Fix] ### Todos * [ ] - Task ### How